Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Ursaach
←
German
Ursache
(cognate)
←
Middle High German
ursache
(derived)
←
Dutch
oorzaak
(cognate)